MATHEMATICS MIDDLE SCHOOL

HURRY FIRST GETS BRAINLLEST A dartboard has 20 equally divided wedges, and you are awarded the number of points in the section your dart lands in. If you are equally likely to land in any wedge, what is the probability you will score more than 5 points?

Answers

Answer 1

Answer:

There are 14 sections with a score higher than 5. And there 20 in total. The probability is:

$P(A) = (\#A)/(\Omega)\n\n\nP(A) = (14)/(20)\n\n\nP(A) = (7)/(10)\n\n\nP(A)= 70\%$

Answer 2

Answer:

Answer:

1/4

Step-by-step explanation:

because there is 20 wedges and 5 wedges have less than 5 points.

so 5/20 = 1/4

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If two thirds of a number is decreased by 4, the result is 56. find the numberif 38 is added to 5/9 of a number, the result is 128. find the number

the sum of 3/5 of a number and 2.3 is 14.6. find the number.

Answers

$56+4=60\n\n60*3=180\n\n180:2=\fbox{90}\n\nCHECK:\n(2)/(3)*90-4=2*30-4=60-4=56$

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$128-38=90\n\n90*9=810\n\n810:5=\fbox{162}\n\nCHECK:\n\n38+(5)/(9)*162=38+5*18=38+90=128$

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$14.6-2.3=12.3\n\n12.3*5=61.5\n\n61.5:3=\fbox{20.5}\n\nCHECK:\n\n(3)/(5)*20.5+2.3=3*4.1+2.3=12.3+2.3=14.6$

Let the number be x
There are actually 3 different statements -

1. two-thirds of a number decreased by 5 is 56
2*x/3 - 4 =56
2*x/3=60
x=90

2. 38 added to 5/9 of number gives 128
i.e 5*x/9 + 38 = 128
5*x/9 = 90
x = 162

3. sum of 2.3 and 3/5 of number gives 14.6
i.e 2.3 + 3*x/5 = 14.6
3*x/5 = 12.3
x = 4.1*5
x = 20.5

!!20 points!!! Determine which postulate or theorem can be used to prove that ABC =
DCB

Answers

I think the answer is A, SAS

8. Judges in a skateboarding competition gave scores of 8.2, 81, 81, 8.4Which two scores were closest to one another? Explain.

Answers

Do you have answer options for this question?

WILL MARK BRAINLIST!!!!

Just need question 1 (i) and 2 (i), (ii)

Answers

2i
y=4-2x and 4x+2y = 5 can be rewritten as:

y = -2x + 4
2y = -4x + 5

Multiply all 3 terms of the first eq'n by 2: 2y = -4x + 8

Note that 2y = -4x shows up in both equations. This is enuf info on which to conclude that the 2 lines have the same slope.

Why do you start with the greater number when adding on a number line

Answers

I think i am incorrect about this; but here it goes anyways..

On a number line, there is negatives and positives. As such, if there's only negatives, you must start with the lower negative due that it is much more huger than the bottom negatives.

Now then, if there's positive and negatives on there, go for the positive. The negatives are lower than positives, and it'll always stay like that.

But! If it doesn't make any sense, take a look at this.

5-, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5.

See the pattern? -5 is the lowest one out of all them, due that the negatives that are currently raising, it is going into the positives. So you must add the greater number first.

Nikki ate 1/4 of a pizza. The pizza had more than 4 slices. Wich fraction also describes how much of the pizza Nikki could have eaten?

Answers

2/8 is another possible answer for how much she also ate.

3/12 could also be an equivalent fraction